#define _CRT_SECURE_NO_WARNINGS
#pragma warning(disable:6031)
#include<iostream>
#include<assert.h>
#include<stdlib.h>

typedef struct SeqList {
	int* a;
	int size;
	int capaticy;
}SeqList;
void SeqListInit(SeqList& plist,int capacity=4);
void SeqListPushBack(SeqList& plist,int val);
void SeqListDisplay(SeqList& plist);
void CheckCapacity(SeqList& plist);